package Demo1;

class MyThread extends Thread {
    public void run() {
        while(true) {
            System.out.println("hello MyThread");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}
public class Demo1 {
    public static void main(String[] args) throws InterruptedException {
        Thread t = new MyThread();

        //调用 run 方法
        t.run();

        //主线程执行的逻辑
        while(true) {
            System.out.println("hello main");
            Thread.sleep(1000);
        }
    }
}
